A toy gun's spring (k = 200 N/m) is compressed 0.1 m and launches a 50 g ball. Ignoring losses, the ball's speed is:

  1. 8.94 m/s
  2. 12.6 m/s
  3. 6.32 m/s
  4. 3.16 m/s
Answer

C) 6.32 m/s

12kx^2 = 12mv^2 Rightarrow v = x km = 6.32 m/s. SLO P-11-B-28 · Application

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